Cylinder head bolt COMPLETELY backed out of engine - BMW S1000RR Forums: BMW Sportbike Forum
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Old 10-05-2011, 01:40 PM   #1 (permalink)
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Default Cylinder head bolt COMPLETELY backed out of engine

I have a 2011 S1 that I purchased new and I had been hearing a rattling sound after I got about 1800miles on the bike that I couldn't quite put my finger on. So I looked the bike over one last time and turns out,as i looked through the shark gill of the ride side fairing,the cylinder head bolt had completely backed out of the crankcase.I could literally take the bolt out by lifting it up.I think if I would have rode over a bump in the road,it would have completely fallen out. I took the bike to the dealer to have them retorque it and add thread lock. i could have did it my self but I wanted it documented in case I had any problems. So make sure everyone checks their bolts!

Last edited by Nazgul; 10-05-2011 at 01:44 PM.
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Old 10-05-2011, 01:57 PM   #2 (permalink)
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Got a picture of the bolt we're talking about?
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Old 10-05-2011, 02:20 PM   #3 (permalink)
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Got a picture of the bolt we're talking about?
I actually took 3 pics of the bolt but I don't know how to post pics. I can email them to some one and they could post them on here for me.
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Old 10-05-2011, 02:47 PM   #4 (permalink)
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"I actually took 3 pics of the bolt but I don't know how to post pics. I can email them to some one and they could post them on here for me."

I PM'd you my email address.
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Old 10-05-2011, 02:52 PM   #5 (permalink)
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good work Nazgul...!! For pointed out and document on the forum...
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Old 10-05-2011, 03:21 PM   #6 (permalink)
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Pics of loose bolt from Nazgul's bike......
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Old 10-05-2011, 04:14 PM   #7 (permalink)
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WTF?
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Old 10-05-2011, 04:25 PM   #8 (permalink)
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WTF?
That was exactly what I said! It was the cylinder head bolt over the timing chain cavity. The dealer said that was unusual. You think?! Dealer removed the fairing and torqued the bolt and added thread lock and checked the other bolts. I am curious if this could have caused any damage to my motor.
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Old 10-05-2011, 04:27 PM   #9 (permalink)
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Pics of loose bolt from Nazgul's bike......
Thanks for posting the pics for me.
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Old 10-05-2011, 04:41 PM   #10 (permalink)
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No sweat glad to help.

I'm no mechanic but I doubt that it would have caused any damage as the gasket seemed to have kept sealing tight which would have prevented any oil from spurting out.
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